. >>> two men under arrest for the shootings of four people at the university of southern california. campus police say two men were arguing at about 11:30 last night when one pulled a gun and opened fire. one man was critically wounded three bystanders were also wounded with nonlife- threatening injuries. none of the people involved was usc students. >>> not far from there, three people were injured in hollywood when shots were fired into a halloween crowd. los angeles police say three people were taken to hospitals one of them a 17-year-old who is critically injured with gunshot wounds to the chest and leg. at least three men were taken into custody. >>> investigators are looking into the death of a man who was shot at an oakland cell phone store last night at the metro pcs store on international boulevard. investigators believe it was connected to a robbery attempt. but they are not releasing any more information. >>> san francisco police hope some new video will lead them to a guy behind a bus burning a few nights ago. cbs 5 reporter anne makovec with how social media led them to